Finding the Third Proportional to 99.56 and 208.13

Step by Step Solution

1. Step 1: Write the proportion equation
   99.56 : 208.13 = 208.13 : x
2. Step 2: Convert to fraction form
   99.56/208.13 = 208.13/x
3. Step 3: Cross multiply
   99.56x = 208.13 × 208.13
4. Step 4: Simplify right side
   99.56x = 43,316.02
5. Step 5: Solve for x
   x = 43,316.02/99.56
6. Step 6: Final answer
   x = 435.06